Two-stroke-cycle internal-combustion engine.



O RICHTER & H. VOGEL.

TWO-STROKE CYCLE INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAY 26. I915.

832 I Pafvnfvd June 2?, 1916.

ments in TwoStrokeentra n @TATE earner @Fhlhfilht GSKAR RICHTEEt'AHD HANS VOGEL, 0F KIEL, GERMANY.

TWO-STEOKE-GYCLE INTERNAL-COMBUSTION ENGINE.

To all whom it may concern Be it known that we, Osnan Rron'rnn and HANS Voenn, citizens of the German Enr pire, residing at Kiel, Germany, have invented certain new and useful Improve Cycle lnternaLCombustion Engines, of which the following is a specification. Ehe present invention relates to an improvement on the engine described and claimed in our application filed April 21, 1915, Serial No. 22,908.

In the accompanying trated one embodiment of the invention showing a vertical section of the parts concerned in a vertical working cylinder.

A. is the working cylinder and B the piston of a two-stroke cycle internal combustion engine which is provided with scaveng ing and exhaust ports, regulated by the piston, and opening into passages Q and D. For the sake of clearness only one scavenging port and one exhaust port has been shown and the length of the ports has been made larger than they should be in reality. In the scavenging ports are constructed, in the usual manner, guide blades 0 c 0 c" c which serve as conductors for the scavenging air entering from the passage C. -The outlet angles of these guide blades and the adjacent walls of the scavenging ports, have Specification of Letters Patent.

' zone 1 is given a greater speed drawing is illus-- been selected as in the case of the above referred to application, so that they increase in size from above downward, whereby the scavenging air will be uniformly distrib utcd for scavenging in the whole chamber of the cylinder In accordance with the present invention the spaces between the blades 0 and c, as well asbetweenthe blade Q and the lower limiting surfiice of the scavenging port are separated by walls F from the passage C and two check valves G and H have been provided for the pin-pose of regulating the admittance of the scavenging air to the spaces just mentioned.

By means of thisarrangeinent is attained that the scavenging air in the scavenging Patented am at, ieic.

Application filed May 26, 1915. Serial No. 30,618.

than what is the. case in the scavenging zone 11, corresponding to the longer way which it has to travel, and that the scavenging air in the scavenging zone responding to its smallest way of travel. might occur in the arrangement inthe above mentioned application greatest amount lit described that the of scavenging air selects the shortest way (zone III) and passes the cylinder without the desired scavenging ac tion, while it is of great importance that the upper portion of the cylinder be well scav enged. i i

In place of the check valves G, H, annular slide valves may be used, and lastly the checking members may also be entirely dispensed with and the correct speed of the scavenging air attained through different sizes of the entrances g 71.

We claim 2- 1. In a two-stroke cycle internal combustion engine having scavenging orifices subdivided by guide blades, said blades being arranged to provide a gradual increasing 0 the outlet angles of the scavenging air in the direction toward the crank shaft of the engine; means for increasing the speed of the air entering into the cylinder oppositely to the increase of said outlet angles.

2. ln a two-stroke cycle internil combustion engine having scavenging orifices sub divided by guide blades, said blades being arranged to provide a gradual increasing of the outlet angles of the scavenging air in the direction of the crank shaft of the engine; means for increasing the speed of the scavenging air entering into the cylinder in accordance with the longer distance said air has totravel in the cylinder.

3. In a two-stroke cycle internal tion engine divided by combushaving scavenging orifices subguide blades, said blades b eing gine; means for increasing scavenging air III has the least speed coraccordance with the longer distance saidair fica-tion is signed in the presence of two witcomprising a Wall connecting some of said "v P H 9 blades said wall being provided with openings for admitting the air and members mg 1 J istering with said openings for regulating Witnesses: the air passing through the openings. JULIUS Roacmc,

In testimony whereof the foregoing speci- I'IEINRICII IIANseinLn'n has to travel in the cylinder, said means nesses. 

